Apr 27, 2023 · As you can see, this is an issue of pressure. The significance of this code is that you may have an internal engine problem that created a blow-by situation. The crankcase pressure sensor is …

High crankcase pressure (SPN 101, FMI 16) indicates possible PCV valve blockage or worn piston rings causing blow-by gases. Inspect and clean or replace the PCV valve and check engine seals.

Mar 6, 2024 · There are three basic root causes for excess crankcase pressure: PCV system obstruction,, mechanical fault, and intake manifold check valve failure. This is the most common …

Jan 3, 2024 · High crankcase pressure occurs when the pressure inside the engine’s crankcase exceeds the normal operating range. This can be caused by several factors, including inadequate …

Sep 26, 2025 · Discover the common symptoms of too much crankcase pressure and learn how it affects your vehicle’s performance. Identify signs like oil leaks, smoke, and unusual noises to prevent …

Dec 22, 2015 · The pressure inside the crankcase filter is measured by the crankcase pressure sensor. When the crankcase pressure sensor determines that the crankcase pressure is higher than normal, …

101 spn fault code name is Engine Crankcase Pressure 1. If you don't take the time to look into 101 spn fault when it arises, it can add up quickly. One small issue like 101 can cause a larger component to …

Learn how to fix too much crankcase pressure in diesel engine and its causes, signs, consequences, solutions, troubleshooting, and preventive measures.

Nov 2, 2025 · This article will explore the signs, causes, and solutions for excessive crankcase pressure, providing step-by-step guidance for diagnosis, internal and external repairs, and preventive …

May 14, 2023 · On engines using the factory designed crankcase ventilation system (a PCV or “positive crankcase ventilation” system), we typically measure peak crankcase pressures on the order of 2.5 …